Java Calculate Square Root Without Using Library Method
If we want to calculate square root, we can use Math.sqrt() method. It is simple. Now do you know how to write such a method by yourself?
Here is the equation you need.
The first sqrt number should be the input number / 2.
Using the equation, we can come up with a Java Square Root method by ourselves.
public static double sqrt(int number) { double t; double squareRoot = number / 2; do { t = squareRoot; squareRoot = (t + (number / t)) / 2; } while ((t  squareRoot) != 0); return squareRoot; } 
<pre><code> String foo = "bar"; </code></pre>

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